scholarly journals MODELING LOCAL RESOURCES AND CONSTRAINTS ON THE ENERGY DEVELOPMENT

2016 ◽  
Vol 38 (4) ◽  
pp. 394-402
Author(s):  
Vidas Lekavičius ◽  
Arvydas Galinis
Keyword(s):  
Scientific Literature ◽  
Energy System ◽  
Influential Factors ◽  
Energy Planning ◽  
Positive Effects ◽  
Local Resources ◽  
Planning Models ◽  
The Impact ◽  
Modelling Methods ◽  
Sensitivity And Uncertainty Analysis

Renewable energy and local resources play increasingly important role in the contemporary energy system. However, many energy planning models fail to represent peculiarities and constraints related to the use of bioenergy and other local resources. The purpose of this research is to evaluate the impact of modelling methods used for the reflection of local energy and non-energy resources and constraints in energy planning models. For this, scientific literature concerning modelling methods has been analysed and special mathematical model has been created. This model allows for optimization of heat production in different generation sources. Global sensitivity and uncertainty analysis has revealed the most influential factors in both traditional specification of the model and extended one which includes reflection of local resources and constraints. The results of the research highlight the positive effects provided by the integration of local peculiarities into the traditional energy planning models.

The Bioceanic Amazon Corridors: An Opportunity for Development of Sustainable Energy System

2004 ◽  
Author(s):  
Pedro Mendoza G. ◽  
Maximiliano Arroyo Ulloa ◽  
Vincenzo Naso
Keyword(s):  
Alternative Energy ◽  
Energy Systems ◽  
Energy System ◽  
Renewable Sources ◽  
Energy Technologies ◽  
Local Resources ◽  
Decentralized Energy ◽  
Sustainable Energy System ◽  
The Impact ◽  
Principal Energy

The bioceanic Amazon corridor represents a development opportunity for the Peruvian and Brazilian economy but this economic evolution is linked to the production and use of energy. Energy is a conditioning factor of economic growth and development and the application of conventional (or alternative) energy systems is strongly influenced by both quantitative and qualitative trends in energy consumption. Decentralized production of energy is necessary, and new decentralized energy technologies based on renewable sources could provide additional income opportunities, decreasing environmental risk along Amazon corridor, and providing clean fuel and electricity. It’s necessary that the bioceanic Amazon corridors call for the application of energy systems related to the renewable local resources in coast, mountain and forest. In Peru, firewood is the principal energy source for cooking and heating and this fuel is used in inefficient combustion system that increases the impact on ecosystems. Typical Peruvian biomass source are wood, agricultural residues, agro industrial waste and municipal solid waste. The most obvious it’s the availability of agricultural and agro industrial residues that could be used as a biomass fuel source in modern plant to produce electricity. Today, there is a growing interest for ethanol production from sugar cane, but it couldn’t be applied along bioceanic corridors; therefore it is necessary to integrate other renewable sources.

scholarly journals Linking Dynamic Building Simulation with Long-Term Energy System Planning to Improve Buildings Urban Energy Planning Strategies

Smart Cities ◽  
2020 ◽  
Vol 3 (4) ◽  
pp. 1242-1265
Author(s):  
Lidia Stermieri ◽  
Chiara Delmastro ◽  
Cristina Becchio ◽  
Stefano Paolo Corgnati
Keyword(s):  
Energy Consumption ◽  
Energy Demand ◽  
Clean Energy ◽  
Energy System ◽  
Building Energy ◽  
Building Simulation ◽  
Energy Planning ◽  
Low Grade ◽  
Urban Energy ◽  
The Impact

The building sector is currently responsible of 40% of global final energy consumption, influencing the broader energy system in terms of new electricity and heat capacity additions, as well as distribution infrastructure reinforcement. Current building energy efficiency potential is largely untapped, especially at the local level where retrofit interventions are typically enforced, neglecting their potential synergies with the entire energy system. To improve the understanding of these potential interactions, this paper proposes a methodology that links dynamic building simulation and energy planning tools at the urban scale. At first, a detailed bottom-up analysis was conducted to estimate the current and post-retrofit energy demand of the building stock. The stock analysis is further linked to a broader energy system simulation model to understand the impact of building renovation on the whole urban energy system in terms of cost, greenhouse gas emission, and primary energy consumption up to 2050. The methodology is suited to analyze the relationship between building energy demand reduction potential and clean energy sources’ deployment to shift buildings away from fossil fuels, the key priority for decarbonizing buildings. The methodology was applied to the case study city of Torino, Italy, highlighting the critical role of coupling proper building retrofit intervention with district-level heat generation strategies, such as modern district heating able to exploit low-grade heat. Being able to simulate both demand and supply future alternatives, the methodology provides a robust reference for municipalities and energy suppliers aiming at promoting efficient energy policies and targeted investments.

scholarly journals A REVIEW OF EUROPE’S TRANSITION FROM FOSSIL FUELS TO RENEWABLE ENERGY USING CIRCULAR ECONOMY PRINCIPLES

2021 ◽  
Vol 11 (2) ◽  
pp. 95-107
Author(s):  
Nicolae Pintilie ◽  
Keyword(s):  
European Union ◽  
Renewable Energy ◽  
Circular Economy ◽  
Fossil Fuels ◽  
New Technologies ◽  
Energy System ◽  
Great Opportunity ◽  
Positive Effects ◽  
European Investment ◽  
The Impact

More and more public and private organizations are trying to integrate the concept of circular economy into their daily operations. Given the existing pressures related to climate change, there are various debates in the literature on how to reduce the impact, and one of these debates is the use of renewable energy to the detriment of fossil fuels. This paper aims to create an image of the link between circular economy and the transition from fossil fuels to renewable energy through specialized papers published between 2000 and 2020 and through statistics published by International Agencies such as Eurostat. In this way, this paper is based on the study and analysis of the updated databases regarding the mentioned indicators. Moreover, the paper also discusses different possibilities of circular economy use and how they can be integrated into the European body, with a positive effect on the society and environment. The study found that European Union energy supply is increasingly based on renewable resources, the use of fossil fuels being limited from one year to another. At the same time, even if in the last decades the European Union has been characterized by industrialization and urbanization, there can be seen a growing efficiency of the energy system in the conditions in which the GDP per capita had a fulminant growth of over 50%. Moving forward, one of the most interesting result of the paper is related to a massive concentration of works in the last two years of the period considered in the analysis. In other words, there is a great opportunity for more scientific research in the field. Despite this, researchers agree that the principles of the circular economy contribute to the conversion of the energy system, with positive effects on society, ensuring sustainability, productivity and efficient waste management. At the end, in order to support the energy transition, a number of institutions such as the European Investment Bank are supporting initiatives that aim to invest in objectives such as new technologies which could adopt circular economy. The paper also presents possible limits of the research, but also future directions of its development.

scholarly journals A framework for regional smart energy planning using volunteered geographic information

2020 ◽  
Vol 54 ◽  
pp. 179-193
Author(s):  
Javier Valdes ◽  
Sebastian Wöllmann ◽  
Andreas Weber ◽  
Grégoire Klaus ◽  
Christina Sigl ◽  
...  
Keyword(s):  
Optimization Model ◽  
Web Application ◽  
Simulation Models ◽  
Volunteered Geographic Information ◽  
Energy System ◽  
Geographic Information ◽  
Weather Data ◽  
Energy Planning ◽  
Optimization And Simulation ◽  
The Impact

Abstract. This study presents a framework for regional smart energy planning for the optimal location and sizing of small hybrid systems. By using an optimization model – in combination with weather data – various local energy systems are simulated using the Calliope and PyPSA energy system simulation tools. The optimization and simulation models are fed with GIS data from different volunteered geographic information projects, including OpenStreetMap. These allow automatic allocation of specific demand profiles to diverse OpenStreetMap building categories. Moreover, based on the characteristics of the OpenStreetMap data, a set of possible distributed energy resources, including renewables and fossil-fueled generators, is defined for each building category. The optimization model can be applied for a set of scenarios based on different assumptions on electricity prices and technologies. Moreover, to assess the impact of the scenarios on the current distribution infrastructure, a simulation model of the low- and medium-voltage network is conducted. Finally, to facilitate their dissemination, the results of the simulation are stored in a PostgreSQL database, before they are delivered by a RESTful Laravel Server and displayed in an angular web application.

scholarly journals The Challenge in the Management of Historic Trees in Urban Environments during Climate Change: The Case of Corso Trieste (Rome, Italy)

Atmosphere ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 500
Author(s):  
Elisa Gatto ◽  
Riccardo Buccolieri ◽  
Leonardo Perronace ◽  
Jose Santiago
Keyword(s):  
Climate Change ◽  
Thermal Comfort ◽  
Scientific Literature ◽  
Urban Environments ◽  
Intervention Strategies ◽  
Tree Management ◽  
Positive Effects ◽  
Hydrostatic Model ◽  
Planning Methodology ◽  
The Impact

This study carries out a quantitative analysis of the impact on microclimate (air temperature and thermal comfort) of a row of 165 historical Pinus pinea L. located in a central neighbourhood of Rome (Italy). The analysis starts from a qualitative general analysis on the stressful conditions leading to tree decline in the urban environment especially during extreme climate change phenomena. Subsequently, the effects of planting new types of trees are assessed using ENVI-met, a 3D prognostic non-hydrostatic model for the simulation of surface-plant-air interactions. Results, obtained by simulating three different scenarios in which the trees are first removed and then modified, show that a gradual renewal of the existing trees, based on priority criteria of maturity or senescence, vegetative and phytosanitary conditions, efficiency of ecosystem services and safety for citizens, has positive effects on thermal comfort. By integrating current results and scientific literature, the final aim of this work is to provide stakeholders with a strategic and systemic planning methodology, which, based on the innovative integrated use of tree management and modelling tools, may (i) enhance the benefits of greening in a scenario of climate change and (ii) lead to intervention strategies based on complementarity between conservation of existing trees and tree renewal.

Income Diversification and Bank Efficiency in Vietnam

2017 ◽  
pp. 52-67
Author(s):  
Sang Nguyen Minh
Keyword(s):  
Regression Model ◽  
Commercial Banks ◽  
Banking System ◽  
Operational Efficiency ◽  
Commercial Banking ◽  
Tobit Regression ◽  
Income Diversification ◽  
Positive Effects ◽  
Study Results ◽  
The Impact

This study uses the DEA (Data Envelopment Analysis) method to estimate the technical efficiency index of 34 Vietnamese commercial banks in the period 2007-2015, and then it analyzes the impact of income diversification on the operational efficiency of Vietnamese commercial banks through a censored regression model - the Tobit regression model. Research results indicate that income diversification has positive effects on the operational efficiency of Vietnamese commercial banks in the research period. Based on study results, in this research some recommendations forpolicy are given to enhance the operational efficiency of Vietnam’s commercial banking system.

Impact of Digitalization on Service Work in Knowledge-Intensive Business Services: An Empirical Study in Tax Consultancies

2019 ◽  
Vol 3 (4) ◽  
pp. 209-222
Author(s):  
Philipp K. Görs ◽  
Henning Hummert ◽  
Anne Traum ◽  
Friedemann W. Nerdinger
Keyword(s):  
Work Engagement ◽  
Service Work ◽  
Psychological Consequences ◽  
Business Services ◽  
Knowledge Intensive Business Services ◽  
Positive Effects ◽  
Knowledge Intensive ◽  
The Impact ◽  
Positive Effect ◽  
Special Case

Digitalization is a megatrend, but there is relatively little knowledge about its consequences for service work in general and specifically in knowledge-intensive business services (KIBS). We studied the impact of digitalization on psychological consequences for employees in tax consultancies as a special case of KIBS. We compare two tax consulting jobs with very different job demands, those of tax consultants (TCs) and assistant tax consultants (ATCs). The results show that the extent of digitalization at the workplace level for ATCs correlates significantly positively with their job satisfaction. For TCs, the same variable correlates positively with their work engagement. These positive effects of digitalization are mediated in the case of ATCs by the impact on important job characteristics. In the case of TCs, which already have very good working conditions, the impact is mediated by the positive effect on self-efficacy. Theoretical and practical consequences of these results are discussed.

'Planning Economic Integration7, by L.B.M. Mennes, Rotterdam University Press, 1973.

1973 ◽  
Vol 12 (4) ◽  
pp. 438-439
Author(s):  
G. M. Radhul
Keyword(s):  
Economic Integration ◽  
Point Of View ◽  
Planning Model ◽  
Integration Policy ◽  
Medium Term ◽  
Future Production ◽  
Planning Models ◽  
Partici Pant ◽  
The Impact ◽  
Integration Area

The book under review deals with economic integration among deve¬loping countries from the point of view of planning. The author believes that it is useful to approach economic integration from a planning point of view and to develop planning models for it, because the theory of economic integration relevant for developing countries should be directed towards the impact of integration on future investments and future production. The type of models used in the book are the multisector linear programming models and the method of analysis is essentially a comparison of two situations; one with economic integration and the other without. For each prospective partici¬pant a medium term planning model is drawn up taking account of its economic situation in some base year. The results of these single country planning models are analysed and compared to those of a similar planning model for the integration area as a whole. The consequences of the integration policy are then evaluated.

HOW CLIMATE CHANGE CAN INFLUENCE THE AGRICULTURE IN UKRAINE: A REVIEW

2020 ◽  
Author(s):  
N. Maidanovych ◽  
Keyword(s):  
Climate Change ◽  
Crop Yields ◽  
Soil Surface ◽  
Winter Period ◽  
Negative Consequences ◽  
Resource Saving ◽  
Impact Of Climate Change ◽  
Positive Effects ◽  
Average Annual Temperature ◽  
The Impact

The purpose of this work is to review and analyze the main results of modern research on the impact of climate change on the agro-sphere of Ukraine. Results. Analysis of research has shown that the effects of climate change on the agro-sphere are already being felt today and will continue in the future. The observed climate changes in recent decades have already significantly affected the shift in the northern direction of all agro-climatic zones of Europe, including Ukraine. From the point of view of productivity of the agro-sphere of Ukraine, climate change will have both positive and negative consequences. The positives include: improving the conditions of formation and reducing the harvesting time of crop yields; the possibility of effective introduction of late varieties (hybrids), which require more thermal resources; improving the conditions for overwintering crops; increase the efficiency of fertilizer application. Model estimates of the impact of climate change on wheat yields in Ukraine mainly indicate the positive effects of global warming on yields in the medium term, but with an increase in the average annual temperature by 2 ° C above normal, grain yields are expected to decrease. The negative consequences of the impact of climate change on the agrosphere include: increased drought during the growing season; acceleration of humus decomposition in soils; deterioration of soil moisture in the southern regions; deterioration of grain quality and failure to ensure full vernalization of grain; increase in the number of pests, the spread of pathogens of plants and weeds due to favorable conditions for their overwintering; increase in wind and water erosion of the soil caused by an increase in droughts and extreme rainfall; increasing risks of freezing of winter crops due to lack of stable snow cover. Conclusions. Resource-saving agricultural technologies are of particular importance in the context of climate change. They include technologies such as no-till, strip-till, ridge-till, which make it possible to partially store and accumulate mulch on the soil surface, reduce the speed of the surface layer of air and contribute to better preservation of moisture accumulated during the autumn-winter period. And in determining the most effective ways and mechanisms to reduce weather risks for Ukrainian farmers, it is necessary to take into account the world practice of climate-smart technologies.

Alteraciones sistémicas y metabólicas producidas por lesión medular

2019 ◽  
Vol 1 (1) ◽  
pp. 59-75
Author(s):  
Gabriel Guízar Sahagún
Keyword(s):  
Spinal Cord ◽  
Daily Living ◽  
Autonomic Function ◽  
Clinical Presentation ◽  
Scientific Literature ◽  
International Standards ◽  
Therapeutic Approaches ◽  
Cord Injury ◽  
Life Threatening ◽  
The Impact

Besides the well-known loss of motor and sensory capabilities, people with spinal cord injury (SCI) experience a broad range of systemic and metabolic abnormalities including, among others, dysfunction of cardiovascular, respiratory, gastrointestinal, urinary, and endocrine systems. These alterations are a significant challenge for patients with SCI because such disorders severely interfere with their daily living and can be potentially life-threatening. Most of these disorders are associated with impairment of regulation of the autonomic nervous system, arising from disruption of connections between higher brain centers and the spinal cord caudal to the injured zone. Thus, the higher and more complete the lesion, the greater the autonomic dysfunction and the severity of complications.This article summarizes the medical scientific literature on key systemic and metabolic alterations derived of SCI. It provides information primarily focused on the pathophysiology and clinical presentation of these disorders, as well as some guides to prevent and alleviate such complications. Due to the impact of these alterations, this topic must be a priority and diffuse to those involved with the care of people with SCI, including the patient himself/herself. We consider that any collaborative effort should be supported, like the development of international standards, to evaluate autonomic function after SCI, as well as the development of novel therapeutic approaches.

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